:root{
  --blue:#2d5c88; --blue2:#e7f1fb; --green:#5f9368; --orange:#f2a65a;
  --red:#b94b4b; --dark:#213142; --muted:#667; --bg:#f3f7fb; --card:#fff;
  --shadow:0 12px 28px rgba(31,52,78,.12);
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:linear-gradient(135deg,#eef6fb,#fffbed);color:var(--dark)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 22px;background:white;box-shadow:var(--shadow);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:16px}.brand img{height:78px;max-width:260px;object-fit:contain}
h1{margin:0;color:var(--blue);font-size:28px}.brand p{margin:4px 0 0;color:var(--muted)}
button,.fileBtn{border:0;padding:10px 13px;border-radius:13px;background:var(--blue2);color:var(--dark);font-weight:700;cursor:pointer;display:inline-block}
button:hover,.fileBtn:hover{filter:brightness(.96)}.primary{background:var(--blue);color:white;width:100%;margin-top:12px}.danger{background:#ffe1e1;color:#8b2525}.fileBtn input{display:none}
.tabs{display:flex;gap:8px;overflow:auto;padding:10px 18px;background:#ffffffb8;backdrop-filter:blur(8px);border-bottom:1px solid #dce8f3;position:sticky;top:110px;z-index:15}
.tabs button{white-space:nowrap}.tabs button.active{background:var(--blue);color:white}
main{padding:20px}.tab{display:none}.tab.active{display:block}.hero{background:white;border-radius:24px;padding:22px;box-shadow:var(--shadow);margin-bottom:18px}
.hero h2{margin:0;color:var(--blue);font-size:30px}.hero p{color:var(--muted)}
.card{background:rgba(255,255,255,.96);border-radius:22px;padding:18px;box-shadow:var(--shadow);border:1px solid rgba(45,92,136,.12);margin-bottom:18px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(280px,1fr));gap:18px}.gridForm{display:grid;grid-template-columns:360px minmax(420px,1fr);gap:18px}
.statGrid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:18px}.stat{background:white;border-radius:20px;padding:16px;text-align:center;box-shadow:var(--shadow)}.stat strong{display:block;font-size:30px;color:var(--blue)}.stat span{font-size:13px;color:var(--muted)}
h2,h3{color:var(--blue)}label{display:block;font-weight:bold;margin-top:10px}input,select,textarea{width:100%;padding:10px;border:2px solid #d8e6f3;border-radius:12px;background:white;margin-top:5px;font:inherit}textarea{min-height:105px;resize:vertical}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:8px;margin-bottom:12px}
.item{border-left:7px solid var(--blue);background:#fbfdff;border-radius:16px;padding:13px;margin:10px 0;box-shadow:0 4px 12px rgba(0,0,0,.05)}
.item.done{opacity:.65;border-left-color:var(--green)}.item.urgent{border-left-color:var(--red);background:#fff7f7}.item.soon{border-left-color:var(--orange);background:#fffaf2}
.itemHead{display:flex;justify-content:space-between;gap:8px;align-items:flex-start}.item h3{margin:0 0 5px;color:var(--dark)}
.badges{display:flex;flex-wrap:wrap;gap:5px;margin:7px 0}.badge{padding:4px 8px;border-radius:999px;background:var(--blue2);font-size:12px;font-weight:bold}.red{background:#ffe1e1!important;color:#8b2525}.orange{background:#fff1da!important;color:#855013}.green{background:#e3f3e7!important;color:#2e6b42}
.countdown{font-weight:bold;color:var(--blue)}.countdown.urgent{color:var(--red)}.actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.actions button{font-size:13px;padding:7px 9px}
.empty{padding:18px;border-radius:16px;background:#f7fafc;color:var(--muted);text-align:center}.small{font-size:13px;color:var(--muted)}.hint{color:var(--muted);font-size:14px}
.progressOuter{height:22px;background:#e8f1fb;border-radius:999px;overflow:hidden}.progressInner{height:100%;width:0;background:linear-gradient(90deg,var(--green),#9ddf9d);transition:.3s}
.calendarHeader{display:flex;align-items:center;justify-content:space-between}.calendarGrid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.dayName{font-weight:bold;text-align:center;color:var(--blue);padding:8px}.day{min-height:120px;background:#f9fcff;border:1px solid #dbe9f5;border-radius:16px;padding:8px}.day.today{outline:3px solid var(--green)}.dayNum{font-weight:bold}.calEvent{font-size:12px;margin:4px 0;padding:4px 6px;border-radius:8px;background:var(--blue2)}
footer{text-align:center;padding:22px;color:#617467;background:#fff;border-top:1px solid #dde8e2;line-height:1.45;font-size:13px}
@media(max-width:1200px){.statGrid{grid-template-columns:repeat(3,1fr)}.grid2,.gridForm{grid-template-columns:1fr}.tabs{top:0}.topbar{position:static;flex-direction:column;align-items:flex-start}.brand img{height:65px}.filters{grid-template-columns:1fr}}
@media(max-width:720px){.statGrid{grid-template-columns:repeat(2,1fr)}main{padding:12px}.calendarGrid{gap:4px}.day{min-height:90px;padding:5px}.topActions{display:flex;flex-wrap:wrap}.brand{flex-direction:column;align-items:flex-start}h1{font-size:22px}}
@media print{.topbar,.tabs,.gridForm>div:first-child,button,.topActions,footer{display:none!important}body{background:white}main{padding:0}.tab{display:block!important}.tab:not(#print){display:none!important}.card{box-shadow:none;border:0}.item{break-inside:avoid}}


/* ===== Mobile-Optimierung / Handy-App-Ansicht ===== */
.mobileHint{display:none}
@media(max-width:820px){
  html{font-size:16px}
  body{
    padding-bottom:88px;
    -webkit-text-size-adjust:100%;
    touch-action:manipulation;
  }

  .topbar{
    position:static;
    padding:12px 14px;
    gap:10px;
    border-bottom:1px solid #dce8f3;
  }

  .brand{
    width:100%;
    flex-direction:row;
    align-items:center;
    gap:10px;
  }

  .brand img{
    height:54px;
    max-width:115px;
    flex:0 0 auto;
  }

  .brand h1{
    font-size:18px;
    line-height:1.15;
  }

  .brand p{
    font-size:12px;
    line-height:1.25;
  }

  .mobileHint{display:block!important;color:#5f9368!important;font-weight:bold}

  .topActions{
    width:100%;
    display:grid;
    grid-template-columns:1fr 1fr 1fr;
    gap:8px;
  }

  .topActions button,
  .topActions .fileBtn{
    width:100%;
    text-align:center;
    margin:0;
    min-height:44px;
  }

  .tabs{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    top:auto;
    z-index:100;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:0;
    padding:6px;
    background:rgba(255,255,255,.97);
    border-top:1px solid #cbddeb;
    border-bottom:0;
    box-shadow:0 -8px 22px rgba(0,0,0,.13);
    overflow:visible;
  }

  .tabs button{
    border-radius:14px;
    min-height:54px;
    padding:6px 3px;
    font-size:0;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:2px;
    background:#eef5fb;
  }

  .tabs button::first-letter{
    font-size:22px;
  }

  .tabs button.active{
    background:#2d5c88;
    color:white;
  }

  .tabs button[data-tab="dashboard"]::after{content:"Start";}
  .tabs button[data-tab="tasks"]::after{content:"Aufgaben";}
  .tabs button[data-tab="calendar"]::after{content:"Kalender";}
  .tabs button[data-tab="goals"]::after{content:"Ziele";}
  .tabs button[data-tab="grades"]::after{content:"Noten";}
  .tabs button[data-tab="examplanner"]::after{content:"Prüfung";}
  .tabs button[data-tab="subjects"]::after{content:"Fächer";}
  .tabs button[data-tab="print"]::after{content:"Druck";}

  .tabs button::after{
    font-size:11px;
    font-weight:700;
  }

  main{
    padding:12px;
  }

  .hero{
    padding:16px;
    border-radius:20px;
    margin-bottom:12px;
  }

  .hero h2{
    font-size:22px;
  }

  .statGrid{
    grid-template-columns:repeat(2,1fr);
    gap:10px;
  }

  .stat{
    padding:12px 8px;
    border-radius:18px;
  }

  .stat strong{
    font-size:24px;
  }

  .stat span{
    font-size:12px;
  }

  .grid2,
  .gridForm{
    grid-template-columns:1fr!important;
    gap:12px;
  }

  .card{
    padding:14px;
    border-radius:20px;
    margin-bottom:12px;
  }

  h2{font-size:21px}
  h3{font-size:18px}

  input,select,textarea{
    font-size:16px;
    min-height:46px;
    border-radius:14px;
    padding:11px;
  }

  textarea{
    min-height:120px;
  }

  button,.fileBtn{
    min-height:46px;
    border-radius:14px;
    font-size:15px;
  }

  .primary{
    min-height:50px;
    font-size:16px;
  }

  .filters{
    grid-template-columns:1fr!important;
    gap:8px;
  }

  .item{
    border-left-width:6px;
    border-radius:18px;
    padding:12px;
    margin:9px 0;
  }

  .itemHead{
    flex-direction:column;
    gap:6px;
  }

  .countdown{
    align-self:flex-start;
    padding:6px 9px;
    border-radius:999px;
    background:#e7f1fb;
  }

  .countdown.urgent{
    background:#ffe1e1;
  }

  .badges{
    gap:5px;
  }

  .badge{
    font-size:11px;
    padding:5px 8px;
  }

  .actions{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:7px;
  }

  .actions button{
    margin:0;
    width:100%;
  }

  .calendarHeader{
    gap:10px;
  }

  .calendarHeader h2{
    font-size:18px;
    text-align:center;
  }

  .calendarGrid{
    grid-template-columns:repeat(7,minmax(38px,1fr));
    gap:4px;
  }

  .dayName{
    font-size:11px;
    padding:5px 0;
  }

  .day{
    min-height:82px;
    padding:5px;
    border-radius:12px;
    overflow:hidden;
  }

  .dayNum{
    font-size:13px;
  }

  .calEvent{
    font-size:10px;
    padding:3px 4px;
    margin:3px 0;
    line-height:1.15;
  }

  .progressOuter{
    height:20px;
  }

  footer{
    font-size:11px;
    padding:16px 12px 104px;
  }
}

@media(max-width:430px){
  .tabs{
    grid-template-columns:repeat(4,1fr);
  }

  .statGrid{
    grid-template-columns:1fr 1fr;
  }

  .brand img{
    max-width:96px;
    height:48px;
  }

  .brand h1{
    font-size:16px;
  }

  .topActions{
    grid-template-columns:1fr;
  }

  .actions{
    grid-template-columns:1fr;
  }
}

/* Bessere Touch-Bedienung für Checkboxen */
.check{
  display:block;
  background:#f7fafc;
  border-radius:14px;
  padding:10px;
  margin:7px 0;
}

.check input{
  width:auto;
  min-height:auto;
  transform:scale(1.25);
  margin-right:8px;
}

/* App-ähnlicher Fokus */
input:focus,select:focus,textarea:focus{
  outline:3px solid rgba(45,92,136,.18);
  border-color:#2d5c88;
}


/* ===== Hilfe-Seite ===== */
.helpIntro{
  border-left:8px solid var(--green);
}
.helpGrid{
  display:grid;
  grid-template-columns:repeat(2,minmax(280px,1fr));
  gap:18px;
}
.helpGrid .card{
  margin-bottom:0;
}
.helpGrid ul,
.helpGrid ol{
  padding-left:22px;
  line-height:1.55;
}
.helpGrid li{
  margin:5px 0;
}
.warningBox{
  background:#fff6d6;
  border-left:6px solid #f2a65a;
  padding:12px;
  border-radius:12px;
}
@media(max-width:820px){
  .helpGrid{
    grid-template-columns:1fr;
    gap:12px;
  }
  .helpIntro p,
  .helpGrid p,
  .helpGrid li{
    font-size:15px;
  }
}
@media print{
  #help .card{
    break-inside:avoid;
  }
}

@media(max-width:820px){.tabs button[data-tab="help"]::after{content:"Hilfe";}}

/* Mobile-Hilfe-Navigation: bei vielen Menüpunkten horizontal wischen */
@media(max-width:820px){
  .tabs{
    display:flex;
    overflow-x:auto;
    scroll-snap-type:x proximity;
    -webkit-overflow-scrolling:touch;
  }
  .tabs button{
    min-width:78px;
    flex:0 0 78px;
    scroll-snap-align:start;
  }
}


/* ===== Rechtliches / Eltern / App-Informationen ===== */
.legalText{
  line-height:1.65;
}
.legalText h3{
  margin-top:22px;
}
.legalText a{
  color:var(--blue);
  font-weight:bold;
}
@media(max-width:820px){
  .tabs button[data-tab="parents"]::after{content:"Eltern";}
  .tabs button[data-tab="about"]::after{content:"App";}
  .tabs button[data-tab="legal"]::after{content:"Recht";}
  .tabs button[data-tab="imprint"]::after{content:"Impr.";}
  .tabs button[data-tab="privacy"]::after{content:"Daten";}
}